Heating-stove.



H. B. HEMPHILL. vHEATING STOVB.

APPLICATION FILED SEPT. 22, 1910.

Patented Apr. 11

A. u wt lik THE Nola/els PErEfes cn., wAsmNcroN, 1:1A c.

HENRY B. HEMPI-IILL, 0F ELDORADO, ILLINOIS.

HEATING-STOVE.

Specification of Letters Patent.

Application filed September 22, 1910.

Patented Apr. 11, 1911.

Serial No. 583,187.

To all whom t may concern:

Be it known that= I, HENRY B. HEMPHILL, a citizen of the United States,residing at Eldorado, in the county of Eldorado and State of Illinois,have invented cert-ain new and useful Improvements in Heating-Stoves andI do declare the following to be a full, clear, and exact description ofthe invention, such as will enable others skilled in the art to which itappertains to make and use the same.

This invention relates to an improved heating stove.

The object of the invention is to construct a simple and efficientheating stove which may be so regulated as to provide a wide range inheating capacity, and to provide draft flues and dampers which areoperable to produce a double combustion simultaneously, and which may beregulated to obtain economical results or otherwise as desired.

With these and other objects in View, the invention consists of certainnovel features of construction, combination and arrangement of parts aswill be more fully described and particularly pointed out 'in theappended claims. Y

In the accompanying drawings, Figure 1 is a side elevation of a stoveconstructed in accordance with this invention; Fig. 2 is a verticalsectional view thereof on a larger scale; Fig. 3 is a horizontal sectiontaken on line 3 3 of Fig. 2, looking in the direction of the arrow; Fig.4 is a similar view taken on line 4 4 of Fig. 2.

In the embodiment illustrated an upright stove is shown comprising asupporting base 1 mounted on suitable legs 2, of any desiredconstruction. Mounted on this base 1 is an ash pit 3 having the usualdoor 4 provided with an air valve. Grate bars as 5 are arranged at itsupper end and on which is mounted a fire box 6 which is preferablyconstructed as shown, in the form of an inverted truncated cone,provided at one side with the usual fuel door 7. The upper end of thisfire box or dome 6 is closed by a cap 8 having a central opening 9therein. This cap 8 is preferably made of cast iron as is also the domeor box 6, and tapers upwardly toward the opening 9 forming asubstantially truncated cone-shaped member, which causes the heat andflame from the fire in the box to be drawn to the center and passed outthrough said opening 9 into a heating drum 10 mounted on said dome. Thisdrum 10 is preferably made in the form of a cylinder of a diameter lessthan the diameter of the dome butl larger than the opening 9 therein, asi; clearly shown in Figs. 1 and 2, and it is secured to the cap of thedome by any suitable means. An air valve 11 is arranged in one side wallnear the lower end of said drum 10. The upper end of this drum 10 isclosed by the usual overhanging top plate l2 with which is connected anordinary upright stove pipe 13 for conveying away the smoke and othergases and having a damper 14 arranged adjacent its connection with thestove top. This pipe 13 is also provided with an air valve 15 arrangedabove the damper 14. A downdraft air flue 16 extends through the topplate 12 through the drum 10 and through the opening 9 in the cap 8 andterminates near the lower end of the fire box 6 for a purpose to bedescribed. A retarding draft flue 17 in the form of a pipe of lessdiameter than the flue 16 extends through said flue 16 to a point belowthe grate and opens into the ash pit 3, the free end thereof beingprovided with a bellshaped member 18 which serves to equalize thesuction in the ash pit. The upper end of this pipe 17 is connected withthe pipe 13 at a point between the damper 14 and air valve 15,preferably by means of an elbow, and is provided with a damper 19 for apurpose hereinafter described. The upper end of the air iiue 16 isprovided with a flue cap 20, operable to turn on or cut off the draftpassing downward through said flue 16.

In the operation of this improved stove, when it is wished to obtain theresults of a common stove, the damper 19 and air cap 20 are closed andthe damper 14 and air Valve 4 are opened, and the stove then burns andproduces the ordinary eect of a common heating stove.

To produce a double combustion in the stove the damper 14 is closed andthe damper 19 and air cap 20 are opened, and the air valve 4 is alsoopened. After these drafts remain in this position for about fiveminutes more or less the damper 14 is slightly opened, which causes thegases which have gradually collected in the drum 10 to ignite, and in avery short time the entire drum will be red hot. It is, of course,understood that not enough gases are allowed to collect to cause anexplosion when ignited. The opening of the damper 14 also tends toprevent such an explosion. To diminish the heat the valve 19 is closedand the damper 11i is flue, said retarding flue being connected atopened.

"When a slow fire is desired, the valve et is opened and air cap 2O anddamper 14 are closed, which produces a very slow but sure fire, as allthe air admitted through valve 4: must pass up through the bell-shapedmember 18 and retarding flue 17 which cools the stove and reduces thetemperature, and also prevents the formation of a flame within thestove.

The peculiar construction of the cap of the dome 6 compels the gases torise to the center of the fire box and pass out through the opening 9 insaid cap into the drum 10, whereby a three fold heat is produced on theair supply coming down through the air flue 16. Another advantagederived from this construction is that in removing the ashes, whendamper 19 has been opened the flying ashes and dust will be drawn intothe bell-shaped member 18 and carried 0H through the pipe 13. Y

From the foregoing description taken in connection with the accompanyingdrawings, the construction and operation of the invention will bereadily understood without requiring a more extended explanation.

Various changes inthe form, proportion and the minor details ofconstruction may be resorted to without departing from the principle orsacrificing any of the advantages of the invention, as defined in theappended claims.

I claim as my invention:

1. A stove comprising a fire box with an ash pit below it, a heatingdrum mounted on said iire box and connected at its lower end therewith,a top plate for said drum, a smoke pipe arranged on said plate, a downdraft flue extending through said top plate and opening near the bottomof said fire box, a retarding flue extending through said -down draftfiue with the walls thereof draft fine extending through said top plateand opening near the bottom of said fire box, a retarding iiue extendingthrough said down draft flue with the walls thereof spaced from thewalls of said downdraft its upper end with said smoke pipe andterminating at its lower end below said fire box in the ash-pit, dampersarranged in said retarding flue and smoke pipe, said retarding fluehaving a bell-shaped member at its lower end opening below said firebox.

3. A heating stove comprising a supporting base, an ash pit mountedthereon, a fire box or dome arranged over said ash pit and having asubstantially truncated cone-shaped upper end with an opening in thecenter thereof, a drum mounted on said fire dome and surrounding theopening in the top thereof and spaced laterally therefrom, an air valvearranged in the lower end of said drum, a smoke pipe connected with theupper end of said drum, a retarding flue connected at one end with saidsmoke pipe and extending downwardly through said drum and fire dome andterminating in said ash pit, valves arranged in said smoke pipe andretarding flue, a down draft air flue surrounding said retarding fluewith the side walls thereof spaced laterally therefrom, a valve cap forclosing the upper end of said draft flue, and the lower end thereofterminating near the lower end of said fire dome.

4L. A heating stove comprising a supporting base, an ash pit mountedthereon, a re box or dome arranged over said ash pit and having asubstantially truncated cone-shaped upper end with an opening in thecenter thereof, a drum mounted on said fire dome and surrounding theopening in the top thereof and spaced laterally therefrom, an air valvearranged in the lower end of said drum, a smoke pipe connected with theupper end of said drum, a retarding flue connected at one end with saidsmoke pipe and extending downwardly through said drum and fire dome andterminating in said ashpit, valves arranged in said smoke pipeandretarding flue, a down draft air flue surrounding said retarding iuewith the side walls thereof spaced laterally therefrom, a valve cap forclosing the upper end of said draft iue, the lower end thereofterminatinof near the lower end of said fire dome, sai( retarding flueand draft flue extending through the central opening in said re box.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

HENRY B. HEMPHILL.

Witnesses GEORGE HEREFORD, MEM HEREFORD.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents, Washington, D. C.

